This site is sometimes refered to as the wayback machine. It allows you to see snapshots of websites as the were before today. Sites you thought had disappeared are still there buried in the realms of snapshotland.
I traced twitter back to 2006 and it was just as potty back then. Nancy - Im thinking of switching from glasses to contacts. Cant get any facebook backpages though due to robots.
Overall - Good fun

Great website! Its Wayback Machine allows to rediscover what websites looked like back in the day. Unfortunately many sites are broken (dead links) but still I dug out a lot of interesting information. For example, I find in their archives how the web-site of my current employer looked in past years.
May be it does not have much practical value but it is rather amusing.
Perfect time waster!